`rdcheng.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:b3bd^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::6815:3b95^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.59.149^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.179.189^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`langston.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cfc^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`langston.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3fc^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`langston.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23fc^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`langston.ns.cloudflare.com`
		A	108.162.195.252^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`langston.ns.cloudflare.com`
		A	162.159.44.252^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`langston.ns.cloudflare.com`
		A	172.64.35.252^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`langston.ns.cloudflare.com`
NS	`miki.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aca^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miki.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0ca^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`miki.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20ca^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`miki.ns.cloudflare.com`
		A	108.162.192.202^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miki.ns.cloudflare.com`
		A	172.64.32.202^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miki.ns.cloudflare.com`
		A	173.245.58.202^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miki.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.59.149, 172.67.179.189
		IPv6	2606:4700:3031::ac43:b3bd, 2606:4700:3032::6815:3b95
SOA	`langston.ns.cloudflare.com`dns@cloudflare.com serial=2399040265

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1771291435

Subdomains

www.rdcheng.com

Same first word

rdcheng.com

Similar names

drcheng.com

drcheng.net

DNS History

13 records (6 active, 7 former)

○NSdns10.hichina.com2017-01-16 → 2020-01-01 · 5 obs

○ 2015-11-11 00:34:06
● 2017-01-16 02:29:54
● 2020-01-01 16:19:10
○ 2026-02-19 17:11:56
○ 2026-03-22 18:56:54

○NSdns9.hichina.com2017-01-16 → 2020-01-01 · 5 obs

○ 2015-11-11 00:34:06
● 2017-01-16 02:29:54
● 2020-01-01 16:19:10
○ 2026-02-19 17:11:56
○ 2026-03-22 18:56:54

●NSlangston.ns.cloudflare.com2026-02-19 → 2026-03-22 · 3 obs

○ 2020-01-01 16:19:10
● 2026-02-19 17:11:56
● 2026-03-22 18:56:54

●NSmiki.ns.cloudflare.com2026-02-19 → 2026-03-22 · 3 obs

○ 2020-01-01 16:19:10
● 2026-02-19 17:11:56
● 2026-03-22 18:56:54

○NSns1.51dns.com2015-07-10 → 2015-07-10 · 3 obs

● 2015-07-10 15:37:50
○ 2015-11-11 00:34:06
○ 2026-03-22 18:56:54

○MXmxn.mxhichina.com2017-01-16 → 2020-01-01 · 4 obs

● 2017-01-16 02:29:54
● 2020-01-01 16:19:10
○ 2026-02-19 17:11:56
○ 2026-03-22 18:56:54

○MXmxw.mxhichina.com2017-01-16 → 2020-01-01 · 4 obs

● 2017-01-16 02:29:54
● 2020-01-01 16:19:10
○ 2026-02-19 17:11:56
○ 2026-03-22 18:56:54

●A104.21.59.1492026-02-19 → 2026-03-22 · 3 obs

○ 2020-01-01 16:19:10
● 2026-02-19 17:11:56
● 2026-03-22 18:56:54

○A107.151.229.2392015-07-10 → 2015-07-10 · 3 obs

● 2015-07-10 15:37:50
○ 2015-11-11 00:34:06
○ 2026-03-22 18:56:54

○A121.199.48.1522017-01-16 → 2020-01-01 · 5 obs

○ 2015-11-11 00:34:06
● 2017-01-16 02:29:54
● 2020-01-01 16:19:10
○ 2026-02-19 17:11:56
○ 2026-03-22 18:56:54

●A172.67.179.1892026-02-19 → 2026-03-22 · 3 obs

○ 2020-01-01 16:19:10
● 2026-02-19 17:11:56
● 2026-03-22 18:56:54

●A2606:4700:3031::ac43:b3bd2026-02-19 → 2026-03-22 · 3 obs

○ 2020-01-01 16:19:10
● 2026-02-19 17:11:56
● 2026-03-22 18:56:54

●A2606:4700:3032::6815:3b952026-02-19 → 2026-03-22 · 3 obs

○ 2020-01-01 16:19:10
● 2026-02-19 17:11:56
● 2026-03-22 18:56:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
rdcheng.com	miki.ns.cloudflare.com, langston.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 108.162.195.252

NS records: miki.ns.cloudflare.com, langston.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rdcheng.com (unsigned zone)

⏱️ Timing

Total: 164ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.179.189, 104.21.59.149`
AAAA	2	`2606:4700:3032::6815:3b95, 2606:4700:3031::ac43:b3bd`
NS	2	`langston.ns.cloudflare.com, miki.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`langston.ns.cloudflare.com dns.cloudflar`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (miki.ns.cloudflare.com, miki.ns.cloudflare.com, miki.ns.cloudflare.com...)

Analysis

Hierarchy

rdcheng.com is parent of www.rdcheng.com.

IP Addresses

rdcheng.com points to four IP numbers: 2606:4700:3031::ac43:b3bd, 2606:4700:3032::6815:3b95, 104.21.59.149 and 172.67.179.189.

Other host names, for instance nena-art.com, wfq.co.uk, ipx.center, footshop.ua and chamsocbe.com share IP numbers with rdcheng.com.

Name Servers

rdcheng.com's delegation is to two name servers langston.ns.cloudflare.com and miki.ns.cloudflare.com.

rdcheng.com shares the same name server configuration as other domains, such as enshuguoji.com, jzram.com, jsjydy.com, rlblue.com and changqingly.com.

rdcheng.com at least partially shares its name servers with other domains, for instance xn--d1afcccdb9ankaw4d.xn--p1ai, evecars.com, accentsource.com, hlg4662d.cc and 0452311.top.

These name servers are commonly used alongside austin.ns.cloudflare.com and maria.ns.cloudflare.com.

Host names with six IP numbers:

langston.ns.cloudflare.com points to: 2606:4700:58::a29f:2cfc, 2803:f800:50::6ca2:c3fc, 2a06:98c1:50::ac40:23fc, 108.162.195.252, 162.159.44.252 and 172.64.35.252.

miki.ns.cloudflare.com points to: 2606:4700:50::adf5:3aca, 2803:f800:50::6ca2:c0ca, 2a06:98c1:50::ac40:20ca, 108.162.192.202, 172.64.32.202 and 173.245.58.202.

rdcheng.com - robtex.com

rdcheng.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

`rdcheng.com`

`com`